Add `mergeFlipped`

未关闭
#84 5 条评论 1 个 reaction 已指派 0 人 在 GitHub 查看

还没有人认领这个 Issue。

评估

难度
2/5
预计耗时
1-3 小时
新手友好度
35/100
Issue 类型
功能
描述清晰度
基本清楚
活跃度
停滞
领域
backend

调研方向

The issue proposes mergeFlipped and the // operator for purescript-record, with examples but no source files or tests named. Start by reading the linked PR #83 and the package’s existing record merge implementation and tests. Done means the proposed operation and operator work for the shown record combinations and are covered by tests.

由索引模型根据 Issue 内容生成。

描述

Add mergeFlipped and an infix operator //

As a user I'm typically more thinking in terms of mergeFlipped than merge, as I want to overwrite a record with some new fields. E.g. in Typescript I can do

const newRecord = { ...otherRecord, more: 23 }

and in dhall // is avaiable as a mergeFlipped operator:

{ home       = "/home/bill"
, privateKey = "/home/bill/.ssh/id_ed25519"
, publicKey  = "/home/blil/.ssh/id_ed25519.pub"
} // { home = "/home/john" }

So in Purescript I would also like to do the following and I think it makes for a nice addition to purescript-record:

person :: { age :: Int
, firstName :: Maybe String
, professional :: String
}
person = 
  { firstName: "John", professional: true } //
  { professional: "Software Engineer", age: 58 } // 
  { firstName: Just "Mike" }

I have created a PR to illustrate this #83

主要语言
PureScript
星标
68
派生
33
平均合并
2 天 23 小时
30 天内合并 PR
1

环境准备

  • 没有 Dockerfile 或 Docker Compose 文件
  • 有 Pull Request 模板
  • 没有贡献指南

从这里开始

  1. 先读完整个 Issue,再读项目的贡献指南。
  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

purescript/purescript-record 的其他 Issue

查看 purescript/purescript-record 的全部 Issue

相似的 Issue

更多 Backend & API Design Issue

把新 issue 发到你的邮箱

精选适合新手参与的 GitHub issue 摘要。